Anvil blade for wire stitching machines



Jan. 10,1933. R. E. ZERUNEITH 1,893,664"

ANVIL BLADE FOR WIRE STITCHING MACHINES Filed April 25. 1931 INVENTOR.

52/2701. FE ZEfiU/VE/ib BY yZAA A ATTORNEY.

Patented Jan. 10, 1933 RUDOLF E. ZERUNEITH, CAMDEN, NEW JERSEY ANVILBLADE FOR WIRE STITCHING- MACHINES Application filed April 23,

My invention relates to a new and useful anvil for use in connectionwith wire stitching or stapling machines which is so devised as topermit stapling of the flaps of a folding paper or card board box aftersuch box has been formed and after the contents of the box have beenplaced therein to prevent the unauthorized and surreptitious exchange ofthe contents of the box after it has been packed and sealed.

As an illustration of the purpose of my invention, I will refer to theconventional package used for shipping radio tubes from manufacturers todealers, which boxes consist of a generally rectangular package havingsuitable cushioning stuifing and containing radio tubes. lVhen apurchaser returns a defective tube to the dealer or when the customertrades in a set of tubes, the dealer,

unless he is scrupulously honest, will withdraw the new tubes from theoriginal package and put the returned or traded in tubes in said packagewith a view of passing such tubes on to an unsuspecting, lessdiscriminating or ignorant customer. This substitution of imperfectgoods is by no means limited to radio tubes and is more or lessprevalent in other fields also.

In order to guard against such deception, manufacturers of productswhich are susceptible to substitution have resorted to the use of paperseals so glued on the package that the package must be broken beforeaccess can be had to the contents of the package. 85 This practice wasnot suflicient for the reason that with patience the seal could beunglued or otherwise removed and put back in position and for thefurther reason that the breaking of the seal can always be explained 40by rough handling of the package, etc.

It is therefore the object of my invention to provide means forpermanently sealing the ends of a package with a wire stitch whichcannot possibly be removed without doing irreparable damage to the bodyof the package and which, in fact, necessitates the complete tearingapart of the end flaps of a package before its contents can be removed.The method of using my invention is fully described and claimed in mycopending appli- 55 of Fig. 2.

upon itselfat 6 to form the stitch supporting 1931. Serial No. 532,383

cation Serial No. 532,382, filed April 23, 1931, this application beingdirected to the anvil blade by which my invention is carried out. To theabove ends my invention consistsof a novel anvil blade adapted to formpart of a wire stitching orstapling machine, said blade having a flathooked end portion which is adapted to engage the end flaps of a boxWhen'said end flap is being inserted in position to close the end of thebox, and to support said box and flap while a stitch is put through saidend flap andthe juxtaposed wall of the box.

My invention further consists of various other novel featuresof'construction and advantage all as hereinafter described and claimedin the accompanying drawing in which:

Fig. 1 is a fragmentary view in side elevation of a portion of awirestitching ma- Z chine, provided with an avil blade embodyin myinvention,

2 isa plan view on an enlarged scale of an anvil blade embodying myinvention shown detached. v i Fig. 3 is a side elevation of Fig. 2.Figs. 4 and 5 are sections on line 4-4 and Fig. 6 represents afragmentary plan view of a modified form of my novel anvil blade. Fig. 7is a section on line .7 7 of Fig. 6.

Referring to the drawing in which like reference characters indicatelike parts, 1 designates the'body porti'on'of my anvil blade which isprovided with the holes 2 for the reception of bolts 3 which secure theanvil blade 'to the frame of a wire stitching machine 4.

The anvil blade is provided with a tapering, flattened head portion 5which is bent member '7 which is spaced from the head portion 5 as at 8,and which isprovided with the concave, stitch deflecting recess 9, whichis positioned below the stitchforming and driving head 10 of thestitching machine 4.

The operation is as follows: The outer edge of the end flap of a box isinserted into the slot 8 formed between the tapered head 5 and thestitch supporting member 7 and the box is then moved inwardly over thetapered head 5 of the anvil blade. This pushes the end flap stillengaged in the slot 8 inwardly into the end of the box and supports itimmediately below the side wall of the box. A stitch is then driven bythe stitching head .10 through the side wall of the box and through theend flap to secure them together. The ends of the wire stitch or staplerare deflected inwardly in opposite directions by the concaved recess 9.After the stitch has been made the box is moved towards the anvil bladeuntil the edge of the end flap engaged by the slot 9, is released.

The tapered head portion 5 is shown in the drawing on a greatly enlargedscale but in reality it is flat so that it may be conveniently insertedbetween the end flap and the side wall to which the end flap is to bestitched. The length of the head 5 or the slot 9 can be varied withdifl'erent requirements. It is to be noted that the stitch is drivenfrom the outside and that the oppositely deflected free ends of thestitch are inaccessible so that the stitch can not be removed andreplaced. It is further to be noted that my novel anvil blade isapplicable to any conventional wire stitching Or stapling machine sinceall such machines have an anvil to support the device while the stitchis driven.

In Figs. 6 and 7 I have shown a modified form of anvil blade wherein theslot 8 intermediate the head 5 and the stitch supporting member 7instead of being out along rectilinear lines to have rectangular crosssection as seen in Figs. 2 and 4, is out along a curved line 12 so thatthe slot 8 extends below or forms an undercut in the bottom of the head5 as seen at 13. This produces a thin edge 14 (see Fig. 7) instead ofthe blunt edge 15 (see Fig. 4) thereby facilitating the insertion of theedge of the box flap to be engaged by the head 5 through the slot 8.

Having thus described my'invention what I claim as new and desire tosecure by Letters Patent, is

An anvil blade for a wire stitching machine comprisinga body portionadapted to be secured to a machine, a front slotted stitch supportingportion adapted to engage the flaps of a container to be stitched, saidstitch supporting portion being tapered and bevelled to facilitateinsertion thereof between said flaps with said container in the closedcondition, and a stitch deflecting recess there- RUDOLF E. ZERUNEITH.

